TAMPA, Fla. (WFLA) — Subtropical Storm Karen formed overnight in the far northern Atlantic as the National Hurricane Center continues to monitor impacts from Tropical Storm Jerry in the Leeward Islands.

Jerry was located about 80 miles north-northeast of the northern Leeward Islands, as of the NHC’s 5 a.m. update.

Its maximum sustained winds are 50 mph. Jerry is moving toward the northwest near 17 mph.

The storm’s center is expected to continue passing to the north of the Leeward Islands on Friday morning before moving away from the islands later in the day. NHC forecasters said Jerry will turn toward the north on Friday night into Saturday, followed by a northward to north-northeastward motion through the the weekend.

Some slow strengthening is possible this weekend.

Jerry is bringing heavy rains and the risk of flash flooding to the islands. 4 to 6 inches of rain are expected across Barbuda. 2 to 4 inches of rain are expected elsewhere across the Leeward and Virgin Islands. Puerto Rico could see up to 2 to 4 inches of rain, with up to 6 inches possible in some areas.

A Tropical Storm Warning is in effect for:

• St. Barthelemy and St. Martin
• Sint Maarten
• Guadeloupe and the adjacent islands

A Tropical Storm Watch is in effect for:

• Saba and St. Eustatius

The NHC is also monitoring Subtropical Storm Karen, which formed in the far northern Atlantic on Tuesday night.

With winds of 45 mph, Karen is moving northeastward over the open ocean at 9 mph.

Its strength is not expected to change much on Friday. NHC forecasters said the system should
degenerate to a post-tropical low on Saturday and then open into a trough.